 Benjamin invented the first trackball called "roller ball" in 1946, patented in 1947.Between 1947 and 1957 he developed the first force-wide integrated Command and Control System.This included patenting the use of an interlaced cursor controlled by a tracker ball to link displays to stored digital information, the first ever digital compression of video data, and the creation of the navy's first digital data link and network which is still in use NATO-wide as "Link 11".